Home / 8,109.21-11,183.67-5,275.53

Finding the Fourth Proportional to 8,109.21, 11,183.67 and 5,275.53

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Solution

The fourth proportional to 8,109.21, 11,183.67 and 5,275.53 is: 7,275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.21 : 11,183.67 = 5,275.53 : x
  2. Step 2: Convert to fraction form
    8,109.21/11,183.67 = 5,275.53/x
  3. Step 3: Cross multiply
    8,109.21x = 11,183.67 × 5,275.53
  4. Step 4: Simplify right side
    8,109.21x = 58,999,786.60
  5. Step 5: Solve for x
    x = 58,999,786.60/8,109.21
  6. Step 6: Final answer
    x = 7,275.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.